Machine for cutting embroideries.



y A. TSGHERNE. MACHINE FOR CUTTING EMBROIDERIES.

APPLICATION FILED. AUG. 1, 1911.

1,025,490. Patented May 7, 1912.

4 SHEETS-SHEET 1.

MM l g A. TSOHERNE. MACHINE FOR CUTTING EMBROIDERIBS.

APPLIOIATION TILED AUG. 1, 1911.

1,025,490. V Patented May 7,1912.

4 SHEETS-SHEET 2.

L i EE 1 g E;

A. TSGHERNE.

MACHINE FOR CUTTING EMBROIDERIES.

APPLIOATION FILED AUG. 1, 1911.

1,025,490. Y PateILted May 'Y, 1912. i

' 4 SHEETS-SHEET 3.

.I nlll llllllllljl I fi mm I mlliiiiiil ii A. TSGHERNE.

MACHINE FOR CUTTING EMBROIDERIES. APPLIOATION FILED AUG. 1, 1911.

1,025,490. Patenfied May 7, 1912.

4 SHEETS-SHEET 4.

Ill mm llll COLUMBIA PLANOGRAmi :0 WASHINGTON. u c.

UNITED STATES PATENT OFFICE.

ALOIS TSGHERNE, OF RORSCHACH, SWITZERLAND, ASSIGNOR TO THE. FIRM 0FHENRI LEVY, 0F RORSCI-IACI-I, SWITZERLAND. I

MACHINE FOR CUTTING EMBROIDERTES.

Specification of Letters Patent.

Patented May '7, 1912.

Application filed August 1, 1911. Serial No. 641,847.

To all whom it may concern:

Be it known that I, ALoIs TSOHERNE, a subject of the Emperor ofAustria-Hungary, residing at Rorschach, Hafenplatz, Switzerland, haveinvented new and useful Improvements in Machines for CuttingEmbroideries; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters orfigures of reference marked thereon, which form a part of thisspecification.

My invention relates to a machine for cutting the embroidery foundationclose along the embroidery-edge.

With some of the machines of this kind hitherto in use the embroideryfoundation was cut by a knife bounding a slot at one side in such amanner, that the cut automatically follows the edge of the embroid ery,the knife being moved to and fro when cut-ting. It is necessarytherefore to alter the angle of the knife in a horizontal plane formedby the edge of the knife and by the longitudinal direction of theembroidery the angle being dependent upon the height of the arcs formingthe edge of the embroidery. 7

Experiments have proved, that movably arranged knives can not be exactlyadjusted and displaced. To facilitate the adjustment of the angle of theknife according to the height of the arc the knife of the machineaccording to this invention is arranged so, that it does not move duringthe cutting neither relatively to the fabric nor to the means carryingthe knife.

A construction according to this invention is illustrated by way ofexample in the accompanying drawings in which- Figure 1 shows themachine in front elevation, partly in section, Fig. 2 in side elevationpartly in section, Fig. 3 in plan partly in section, Fig. 4 is anenlarged plan view of a part of the machine, Fig. 5 is a cross sectionthrough parts of the machine in an enlarged scale, Fig. 6 is anelevation of parts of the machine in an enlarged scale, Fig. 7 shows asection on line A--B of Fig. 6 in an enlarged scale, Fig. 8 illustratesthe working of the knife.

ably supported by bearings 3 and 4 on hori zontal rods 6 and 7 and isfixed to the latter by screws 8. The arm 5 projects over the table 2 andcarries a vertically movable and fixable vertical guide plate 9, towhich is pivoted on each side a lever 11. Studs of the lever 11 are freeto turn in bearings of two horizontal clamping plates 10. Both thelevers 11 are connected to each other by bolts 12 and are acted on by aspring 13. A lever 14 is also rotatably supported by the guide plate 9and carries a horizontal plate 15. A spring 16 acts on this lever. Abracket 17 secured to the frame 1 is provided with a bearing 18, bywhich an axle 19 is supported and prevented from moving in axialdirection. An arm 20 secured to the axle 19 rotatably supports apressing device consisting of a shoe 21, around which passes an endlessapron 22 with roughed surface. A fork shaped support 23, to which ispivotally connected a lever 24 is slidably mounted on the axle 19. Thelever 24 carries a second pressing device consisting of a shoe 25 aroundwhich passes an endless apron 26 also provided with a roughed surface. Ascrew spindle 28 engages a projection 27 of the support 23. The spindleis immovable in axial direction and supported by a bearing 29 secured tothe axle 19. A handwheel 30 is fixed to the spindle. The shoe 25 can belaterally displaced by turning the hand-wheel 30. An axle connects thelever 24 to the support 23 and carries a handwheel 34 and an adjustablering 31 to which latter is secured one end of a spring 32 the other endof which presses against the lever 24. The connecting axle is preventedby a set-screw 35 from being turned by the spring 32. After theset-screw is loosened the tension of the spring 32 can be adjusted byturning the hand-wheel 34. The arm 20 is connected to the support 23 byan axle 36. To the latter is secured a hand lever 37 provided with anose 38 which engages a projection 39 of a part 40 connecting the axles36 and 19 to each other. By reversing the hand lever 37 both the shoes21 and 25 can be lifted at the same time. A spring lever 42 with a nose41 is mounted on the hand lever 37. For securing the shoes 21 and 25 ina raised position the nose 41 can be turned and fixed behind a stop 48mounted on the arm 5.

A guide 47 is provided in a plate 44 mounted on the frame 1. A support46 is movable in the guide 47 by means of a screw 48 with hand-wheel 49while another support 45 is secured to the plate 44. Both the supportsare provided on the top with grooves 50, 51 which are engaged by rollers52 of chains 53, 54 which have roughed surfaces for conveying the fabricto be cut. The chains are located below the aprons 22 and 26. Thegrooves 50 and 51, as well as the aprons 22 and 26, are not parallel toeach other but diverge in the direction in which the fabric is to bemoved. The eonveying chains are mounted on chain wheels 55 and impelledfrom the main shaft 58 by a chain 56 and a chain wheel 57, to whichmotion may be imparted either by a pulley 59 or by a hand wheel 60.

On the support 45, (Figs. 5 and 6) is fixed a bearing 61 having avertical bore in which is pivoted at one end a horizontal oscillatorysupport 62 the other end of which support is provided with a verticalstud 63 which projects into the slotted end of a guide 64 fixed to themovable support 46. A knife holder 65 is provided wit-h a verticalspindle which is. journaled in the horizontal support 62 and said holdercan be clamped in the latter by a set screw 66 engaging the spindle. Aknife 67 is rigidly connected to the holder 65 to which latter ispivoted a plate 69 which forms with the cutting edge of the knife alongitudinal slot which allows only the nonembroidered portion of thefabric to pass. The plate 69 is adjustable relatively to the holder 65by means of a screw 68 (Fig. 7) between the head of which and the plate,is interposed a flat spring which serves to hold the plate in itsadjusted position.

The horizontal knife 67 is arranged obliquely to the direction of theaprons 22, 26 and the feeding means 53, 54, and is immovable during thecutting. By the means described, the position of the knife relatively tothe aprons and feeding means can be adjusted exactly, according to theheight of the scallops.

With the form of execution shown on the drawings the angle formed by theknife and the conveying chains is adjustable by turning the hand-wheel49, so that the machine can be used for cutting embroideries ofdifferent heights, the height in the example shown being indicated bydotted lines (Fig. 8). This advantage is obtained by the arrangement ofthe knife. According to this invention no motion of the knife takesplace at all during the cutting, that means the knife moves neitherwithout the knife carrier, to and fro, or continually for example, norwith the knife-carrier. The knifecarrier and the knife can easily andpositively be displaced by immovably arranged adjusting means.

The brush 7 0 to which motion is imparted by a rope drive 71 from themain shaft 58, moves the edge 1 of the embroidery against the plate 9.The fabric is guided between the table 2 and the plate 9 as well asbetween the clamping plates 10 and 15 (Fig. 8) and fed between theaprons 22 and 25, between the conveying chains 53 and 54 (Fig. 5) andthrough the knife-carrier 65 (Fig. 7). The fabric is out along the edge3 of the embroidery (Fig. 8).

hat I claim is:

1. In a machine for cutting embroidery background, a stationary knifeholder, a knife fixed thereon and forming therewith a slot through whichthe background is passed, means for feeding the embroidery along theedge of the knife, and means to adjust the holder and knife at an angleto the direction of travel of the embroidery.

2. In a machine for cutting embroidery background, a stationary knifeholder, a knife fixed thereon and forming therewith a slot through whichthe background is passed, means for feeding embroidery along the edge ofthe knife, and two supports to which the knife holder is pivotallyconnected at each end, whereby the knife is adjustable at an angle tothe direction of travel of the embroidery.

3. In a machine for cutting embroidery background, the combination withmeans for feeding embroidery in the direction of its length, of asupport mounted on each side of the feeding means, a knife holderpivotally connected with said supports, a knife fixed on the holder andforming therewith a slot through which the background is passed, saidholder and knife being so positioned relatively to the direction oftravel of the embroidery that the latter is fed along the edge of theknife, and means to adjust one of said supports to vary the angle of theholder and knife relatively to the direction of travel of theembroidery. 4. In a machine for cutting embroidery background, thecombination with means for feeding embroidery in the direction of itslength, of a support mounted on each side of the feeding means, a knifeholder pivotally connected with said supports, a knife fixed on theholder and forming therewith a slot through which the background ispassed, said holder and knife being so positioned relatively to thedirection of travel of the embroidery that the latter is fed along theedge of the knife, and means to move one of said supports toward andfrom the feeding means whereby the angle of the holder and knife isvaried relatively to the direction of travel of the embroidery.

5. In a machine for cutting embroidery background, the combination withmeans for feeding embroidery in the direction of its length, a fixedsupport on one side of the feeding means, a support on the other side ofthe latter movable toward and from said feeding means, a horizontalsupport pivoted at one end in the fixed support and slidably connectedat its other end to the movable support, a knife holder mounted on thehorizontal support, and a knife on the holder and forming therewith aslot through'which the background is passed.

6. In a machine for cutting embroidery background, the combination withmeans for feeding embroidery in the direction of its length, a fixedsupport on one side of the feeding means, a support on the other side ofthe latter movable toward and from said feeding means, a horizontalsupport pivoted at one end in the fixed support and slidably connectedat its other end to the movable support, a knife holder adjustablymounted on the horizontal support, and a knife fixed on the holder andforming therewith a slot through which the background is passed.

In testimony that I claim the foregoing as my invention, I have signedmy name in presence of two subscribing witnesses.

ALOIS TSCHERNE.

\Vitnesses:

RANDALL ATKINSON, ALBERT PHILLIPS.

Copies of this patent may be obtained; for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G.

